(Εὐπάτωρ), a surname assumed by many of the kings in Asia after the time of Alexander the Great, occurs likewise as the name of a king of Bosporus in the reign of the emperor M. Aurelius. This king is mentioned by Lucian (Alexand. 57), who speaks of his ambassadors bringing the tribute which had to be paid to the Romans; and his name should perhaps be restored in a corrupt passage of Capitolinus. (Capitol. Anton. Pius, 9, where for curatorem read Eupatorem.) The following coin of Eupator represents on the reverse the heads of M. Aurelius and L. Verus. (Eckhel, vol. ii. pp. 378, 379.)
A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890